Effects of temperature on in-situ aeration

• Main Author: Chuan, Valerie Wei Leng
• Other Authors: Wang Jing-Yuan
• Format: Final Year Project
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Environmental engineering
• Online Access: http://hdl.handle.net/10356/60635
• Institution: Nanyang Technological University

In-situ aeration is a promising remediation technology for old landfills, as it could accelerate carbon transformation, reduce organic load, decrease landfill post closure period and achieve earlier beneficial reuse of land. The purpose of this study is to investigate and understand the effect of temperature on in-situ aeration and landfill leachate quality. In this experiment three landfill simulators were constructed, the first acting as an anaerobic control while the other two were operated under in-situ aeration but varying temperatures of 35°C and 55°C respectively. Analysis of the dissolved organic carbon (DOC) showed that aeration increased the concentration of organic acid, especially humic acid. Structural characterization of the extracted humic matters was conducted in elemental composition, Fourier transform infrared spectroscopy (FTIR), and Carbon-13 Nuclear Magnetic Resonance (13C-NMR). The results showed that abundance of COOH was largely increased by aeration, which may cause the higher solubility of HA & FA in aerobic leachate. Moreover, it was also found that the aromacity of HA & FA could be altered by aeration.